# -*- coding:utf-8 -*-

print('xxxx')
for i in range(10):
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')

    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
    print('xxxx')
